Pilosocereus quadricentralis (E.Y.Dawson) Backeb., Cactaceae 4: 2437. 1960 Pilosocereus quadricentralis (E.Y.Dawson) Backeb., Cactaceae 4: 2437. 1960is new combination for Cephalocereus quadricentralis E.Y.Dawson in Allan Hancock Found. Publ. Occas. Pap. 1: 14, t. 3, f. 5. 1948Taxon for this namePilosocereus quadricentralis (E.Y.Dawson) Backeb.